code: def call(self, g, h, r, norm):
      for layer in self.layers:
          h = layer(g, h, r, norm)
      return h
  
file_path: dgl/examples/tensorflow/rgcn/model.py
imports: import tensorflow
  from tensorflow.keras import layers
label_desc: Use image node_id 6 for calling the BaseRGCN obj's underlying member method code with example usage: obj.call(g, h, r, norm) and returns: h